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Assignment Earth: Antarctica overvisited

As Earth faces potentially catastrophic warming, Antarctica is a sensitive indicator of climate change and a frontier where global partnership makes a difference. This episode focuses on the fact that adventure tourism is skyrocketing in Antarctica, creating serious risks in a fragile ecosystem. (Video: Assignment Earth)

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"Assignment Earth" features compelling video reports from the front lines of major environmental stories from around the globe. Topics include global warming, pollution, habitat destruction and endangered species.